Seperate solo and duo queue
I'm tired of having people bring their friend who has never played outside of bots into ranked games because their friends think "it's okay I can carry". This game is about who is the weakest player and will fuck up your game, not about who is good and will carry. Having some idiot duo is stupid. Also on the other hand I don't want to play with people who have the advantage in knowing each other in real life. Solo queue = solo. Alone. Not with others.